Checkraise 

An ultimate weapon to induce fear during poker game, used mainly by followers of Bling Blang Blaow song in heads up matches. It is a raise by the player after a opponent behind bets into pot, while player checked before.

Checkraise:
Tom: Check
Phil: Bet 45$
Tom: Raise...... 180$

Checkraise by Griswoldswor January 11, 2010

check-raise 

(v) In poker, if you have a great hand but worry that if you bet, nobody will call -- you check through and wait for someone to assume you missed too. When they bet to scare you off, you raise them, resulting in a larger pot.

Check-raising only works if you're first to act and you're the only person who made a hand.

check-raise by Coell May 14, 2005